Christopher Paul Grenier, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Ochsner Medical Center - Baton Rouge Hospital · Baton Rouge, LA · listed as East Baton Rouge Medical Center LLC

Colleagues at Ochsner Clinic LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2842 clinicians in the practice; 12 are shown here.

• Andrea D Cothern, NP General Practice Registered Nurse · Baton Rouge, LA
• Yashar Eshraghi, MD Anesthesiology Physician · Dallas, TX
• Ronald J French Jr., MD Orthopaedic Hand Surgery Physician · Kenner, LA
• Nicole H Graham, CRNA Certified Registered Nurse Anesthetist · New York, NY
• Dr. Terence L. Hauver II, MD Emergency Medicine Physician · New Orleans, LA
• Ann M McLindon, CRNA Certified Registered Nurse Anesthetist · New Orleans, LA
• William C Moss, MD Surgery Physician · Lake Charles, LA
• Elise Judd Nicaud, MD Internal Medicine Physician · Metairie, LA
• Dr. Jennifer Jane O'Brien, MD, PHD Anatomic Pathology & Clinical Pathology Physician · New Orleans, LA
• Dr. James W Smith, MD Gastroenterology Physician · New Orleans, LA
• Dr. Amy L Springer, MD Family Medicine Physician · Red Cloud, NE
• Johnny William Swiger, MD Specialist · Covington, LA

Other providers in Baton Rouge

• Eye Specialists of Louisiana, LLC

  Organization Ophthalmology Physician · NPI 1114959608

  6220 Perkins Rd, Baton Rouge, LA 70808-4120 · (225) 768-7777

• Dr. Crayton Fargason, MD

  Individual Ophthalmology Physician · NPI 1063462679

  7777 Hennessy Blvd Ste 4000, Baton Rouge, LA 70808-4300 · (225) 766-7441

• Dr. David Fargason, MD

  Individual Ophthalmology Physician · NPI 1831141365

  7777 Hennessy Blvd Ste 4000, Baton Rouge, LA 70808 · (225) 766-7441

• Mr. George Demetrios Fivgas, MD

  Individual Ophthalmology Physician · NPI 1790787448

  7777 Hennessy Blvd Ste 3000, Baton Rouge, LA 70808 · (225) 768-9300

• Dr. Hilliard Michael Haik Jr., MD

  Individual Ophthalmology Physician · NPI 1417907049

  7777 Hennessy Blvd Ste 4000, Baton Rouge, LA 70808 · (225) 766-7441

• Dr. Jamie L Hatcher, MD

  Individual Ophthalmology Physician · NPI 1104145192

  7698 Goodwood Blvd, Baton Rouge, LA 70806-7622 · (225) 927-8141

• Dr. Thomas Heigle, MD

  Individual Ophthalmology Physician · NPI 1174573711

  7777 Hennessy Blvd Ste 3000, Baton Rouge, LA 70808-4300 · (225) 766-7441

• Robert A Holloway Jr., MD

  Individual Ophthalmology Physician · NPI 1093877383

  4848 N Blvd, Baton Rouge, LA 70806-4019 · (225) 927-0180